Christoph Hellwig 69878ef475 m68k: Implement arch_dma_prep_coherent() ...

When we remap memory as non-cached, to be used as a DMA coherent buffer,
we should writeback all cache and invalidate the cache lines so that we
make sure we have a clean slate.  Implement this using the cache_push()
helper.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

2019-07-01 11:17:00 +02:00

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